Answer:
€ 1380
Explanation:
The jeweller bought the ring for €1200 and got a profit of 15% when he sold it. That means,
he got €180 more money (which is equivalent to 15% of the portion of the money that he originally paid for the ring).
So, the selling price (the new price of the ring) would be:
= Original price + profit
= €1200 + €180
= €1380